(sqrt(2)+1)/(sqrt(2)-1)=(sqrt(2)+1)(sqrt(2)+1)/(2-1)=3+2sqrt(2)
5/sqrt(3)=5sqrt(3)/3
2/(sqrt(3)+1)=2(sqrt(3)-1)/(3-1)=sqrt(3)-1
(sqrt(2)+1)/(sqrt(2)-1)=(sqrt(2)+1)(sqrt(2)+1)/(2-1)=3+2sqrt(2)
5/sqrt(3)=5sqrt(3)/3
2/(sqrt(3)+1)=2(sqrt(3)-1)/(3-1)=sqrt(3)-1